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Re:Tesla's giant battery saved $40M during its first year, r... by rcxdude on Thursday December 06, 2018 @02:49PM (#18621427)
The cells are probably the hardest part of the system to manufacture. Damn near anyone can make a BMU (and they do), though there is a fair amount of effort needed to design a decent and affordable pack. Very few entities can make a decent lithium cell.
Re:Tesla's giant battery saved $40M during its first year, r... by mschuster91 on Thursday December 06, 2018 @04:42PM (#18622555)
> Damn near anyone can make a BMU (and they do)

For small currents, yes. For the huge current spikes both in draining and charging, or the continuous massive loads of supercharging? No. Same for the actual science: figuring out a way to pull/push hundreds of amps to the pack while taking care that no single cell is overloaded/overheated or that faulty or degraded cells are taken care of.